Thumbscrew

Details Thumbscrew Thumbscrew

1997-08-05

2003-08-26

Douglas, Alan P. (Department: 2911)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

Design Patent

active

D0478806

CLAIM:
The ornamental design for a thumbscrew, as shown and described.

REFERENCES:
patent: D203947 (1966-03-01), Pick
patent: 4394097 (1983-07-01), Horlacher
patent: 5451116 (1995-09-01), Czachor et al.
patent: D370624 (1996-06-01), DiBiagio
“Original Engineered Products”; undated; pp. 4 and 5 Jan. 20, 1996.
“Electronic Hardware Corporation, Consumer Knobs”; undated; p. 8.

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